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CN-122014140-A - Salvaging structure for coal mining drilling

CN122014140ACN 122014140 ACN122014140 ACN 122014140ACN-122014140-A

Abstract

The invention relates to the technical field of drilling auxiliary equipment, in particular to a salvaging structure for drilling holes in coal mining, which comprises a grabbing structure for clamping a drilling tool and a connecting rod for conveying the grabbing structure, wherein the grabbing structure comprises a counterweight disc and a plurality of clamping arms distributed around the periphery of the counterweight disc, each clamping arm consists of an inclined part positioned at the upper side and a vertical part positioned at the lower side, the clamping arms are used for surrounding the drilling tool, the grabbing structure can effectively and firmly clamp the drilling tool in a manner of surrounding the drilling tool, so that the drilling tool can be conveniently and smoothly moved out of the drilling hole, the secondary falling of the drilling tool is avoided, the salvaging success rate is improved, and meanwhile, the grabbing structure can still effectively clamp and salvage the drilling tool even if the drilling tool deviates in the drilling hole due to the fact that the clamping arms can enclose a large space.

Inventors

  • ZHANG XIANGDONG
  • WANG XIANLIANG
  • LI ZHONG
  • JIN WEI
  • WANG QIANG

Assignees

  • 太原市梗阳实业集团有限公司

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. The salvaging structure for the coal mining drilling is characterized by comprising a grabbing structure for clamping a drilling tool and a connecting rod for conveying the grabbing structure; The grabbing structure comprises a balance weight disc and a plurality of clamping arms distributed around the periphery of the balance weight disc, wherein each clamping arm consists of an inclined part positioned at the upper side and a vertical part positioned at the lower side, the inclined part slides and penetrates through the balance weight disc towards the axis direction of the balance weight disc, and at least part of the vertical parts on the balance weight disc clamp a drilling tool; The counterweight plate is provided with a locking unit for fixing the positions of the clamping arms, and the top of each clamping arm is provided with a limiting flat edge.
  2. 2. The fishing structure for coal mining and drilling as claimed in claim 1, wherein a plurality of clamping ribs are arranged on each vertical portion, the clamping ribs are horizontally arranged, and the clamping ribs are vertically arranged; the drilling tool is provided with a plurality of annular clamping grooves, the annular clamping grooves are arranged along the axial direction of the drilling tool, and the annular clamping grooves are matched with the clamping edges for use.
  3. 3. A fishing structure for coal mining drill holes as claimed in claim 2 wherein the ribs are inclined upwardly and the cross section of the annular slot is inclined downwardly.
  4. 4. The salvaging structure for coal mining drilling according to claim 1, wherein the weight plate is provided with an extrusion sleeve in a sliding manner, and the bottom of the clamping rib is matched with inclined parts on a plurality of clamping arms which are not used for clamping the drilling tool on the weight plate.
  5. 5. The fishing structure for coal mining drill holes of claim 4, wherein a plurality of rolling bodies are arranged at the bottom of the extrusion sleeve.
  6. 6. The salvaging structure for coal mining drilling of claim 4, wherein an electromagnetic coil is arranged at the top of the counterweight disc, the electromagnetic coil is fixedly connected with the counterweight disc through a plurality of vertical rods, a plurality of movable rings are sleeved on the outer sides of the vertical rods in a sliding manner, the movable rings are matched with the electromagnetic coil for use, and a supporting ring matched with a limiting flat edge on the clamping arm in a clamping state is arranged on the movable rings.
  7. 7. The fishing structure for coal mining and drilling as defined in claim 4, wherein the locking unit is a side pressure ring fixed on an inner wall of the extrusion sleeve, and an inner wall of the side pressure ring is configured as a conical surface used in cooperation with an inclined portion of the clamping arm in a clamping state.
  8. 8. The salvage structure for coal mining and drilling according to claim 6, wherein an iron core which is located at the inner side of the supporting ring and matched with the electromagnetic coil is arranged in the middle of the extrusion sleeve, and the iron core is fixedly connected with the extrusion sleeve through a plurality of connecting plates.
  9. 9. The fishing structure for coal mining drill holes of claim 8, wherein a jacking column is inserted in the middle of the counterweight disc in a sliding manner, the jacking column is connected with the counterweight disc through a first spring, and the jacking column is matched with the iron core.
  10. 10. The fishing structure for coal mining drill holes according to claim 7, wherein a plurality of inserting columns are arranged at the top of the counterweight disc, and each inserting column penetrates through the side compression ring in a sliding mode and is connected with the connecting rod through a connecting disc; And the second springs are sleeved on the inserted posts and are used for connecting the side pressure rings and the counterweight plates.

Description

Salvaging structure for coal mining drilling Technical Field The invention relates to the technical field of drilling auxiliary equipment, in particular to a salvaging structure for coal mining drilling. Background In the coal mining process, drilling operation is a vital link, and is widely applied to various fields such as gas extraction, coal seam water injection, geological exploration, anchor bolt support, decompression hole construction and the like, and the drilling is usually large in depth and different in aperture, and the operation environment is complex, so that adverse geological conditions such as high ground pressure, rock stratum breakage, coal and rock mass structure imbalance and the like are frequently accompanied. In the drilling construction or the subsequent use stage, the drilling tool (such as a drill rod and a drill bit) is easy to accidentally drop, jam and even break, and the like, so that the drilling tool is retained in a hole, the accident in the hole can directly interrupt the current drilling operation, delay in construction period and waste of manpower and material resources are caused, a key gas extraction channel or a water injection path is more likely to be blocked, the mine safety production deployment and disaster prevention and control effect are affected, in addition, if the dropped metal part cannot be timely taken out, serious obstacle is formed for the drilling construction in the subsequent adjacent area, even secondary accident risk is caused, and therefore, the falling object in the hole is salvaged, the drilling function is recovered, and the method is a common technical challenge which is required to be solved in order to ensure the safe and efficient production of the coal mine. The traditional salvaging mode is to suck the drilling tool out of the drilling hole by utilizing a magnetic attraction mode, and because the environment in the drilling hole is complex, metal substances in the drilling hole are easy to be adsorbed on the magnet in advance, so that the adsorption capacity of the magnet to the drilling tool is weakened, and the success rate of the salvaging mode is not high. Disclosure of Invention The invention provides a salvage structure for coal mining drilling, which can effectively solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a salvaging structure for coal mining drilling comprises a grabbing structure for clamping a drilling tool and a connecting rod for conveying the grabbing structure; The grabbing structure comprises a balance weight disc and a plurality of clamping arms distributed around the periphery of the balance weight disc, wherein each clamping arm consists of an inclined part positioned at the upper side and a vertical part positioned at the lower side, the inclined part slides and penetrates through the balance weight disc towards the axis direction of the balance weight disc, and at least part of the vertical parts on the balance weight disc clamp a drilling tool; The counterweight plate is provided with a locking unit for fixing the positions of the clamping arms, and the top of each clamping arm is provided with a limiting flat edge. In some embodiments of the present invention, each of the vertical portions is provided with a plurality of clamping edges, the clamping edges are horizontally arranged, and the clamping edges are vertically arranged; the drilling tool is provided with a plurality of annular clamping grooves, the annular clamping grooves are arranged along the axial direction of the drilling tool, and the annular clamping grooves are matched with the clamping edges for use. In some embodiments of the invention, the ribs are inclined upward and the cross section of the annular clamping groove is inclined downward. In some embodiments of the present invention, the sliding sleeve on the weight plate is provided with an extrusion sleeve, and the bottom of the clamping rib is matched with the inclined parts on the clamping arms on the weight plate, which do not clamp the drilling tool. In some embodiments of the invention, the bottom of the squeeze jacket is provided with rolling elements. In some embodiments of the present invention, an electromagnetic coil is disposed at the top of the weight plate, the electromagnetic coil is fixedly connected with the weight plate through a plurality of vertical rods, a moving ring is slidably sleeved on the outer sides of the plurality of vertical rods, the moving ring is used in cooperation with the electromagnetic coil, and a supporting ring used in cooperation with a limit flat edge on the clamping arm in a clamping state is disposed on the moving ring. In some embodiments of the present invention, the locking unit is a lateral pressure ring fixed on an inner wall of the pressing sleeve, and the inner wall of the lateral pressure ring is configured as a conical surface for coop